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A comparative study on effects of reflective mulch as an alternative to some other preharvest applications to improve phenolic compounds profile and anthocyanin accumulation of cv. Syrah wine grape (v. vinifera l.)
(Wydawnictwo Akad Rolniczej W Lublinie, 2020) Kök, Demir; Bal, Erdinç
In today’s modern viticulture, reflective mulches and summer pruning practices are remarkable tools that may facilitate grape growers to increase yield and improve the grape quality. This study aimed to assess how reflective mulch application (RM) affects components of phenolic compounds and anthocyanin of cv. Syrah the compared to other preharvest applications such as basal leaf removal application (BLR), foliar proline application (PRO) and their various combinations, including applications of basal leaf removal + proline (BLR+PRO), basal leaf removal + reflective mulch (BLR+RM), proline + reflective mulch (PRO+RM) and basal leaf removal + proline + reflective mulch (BLR+PRO+RM). The study findings demonstrated that reflective mulch application (RM) may considerably enhance light distribution in the canopy of grapevine by increasing reflected light from the ground. In the current study, it was observed that combined applications had significant roles on improving yield and quality characteristics. In terms of total phenolic compounds content, the highest values were obtained from applications of BLR+RM and PRO+RM. Moreover, all applications had a rise to crucial increases in total anthocyanin content of cv. Syrah wine grape when the compared with C application. © by Wydawnictwo Uniwersytetu Przyrodniczego w Lublinie.
Adventitious root development of grapevine rootstock 140Ru as influenced by different root promoting applications
(International Society for Horticultural Science, 2020) Kök, Demir
Hardwood cuttings of grapevine rootstocks have occasionally difficulties in terms of their rooting performances in grape growing. Hence, this study was carried out to test the effects of different root promoting chemicals alone or in combination with each other on shoot and root characteristics of hardwood cuttings in grapevine rootstock 140Ruggeri (140Ru) with rooting problem. For this purpose, different root promoting chemicals were used as alone or in combination with each other such as Control, 1% hydrogen peroxide (H2O2), 4 mM putrescine (PUT), 4% sucrose (SUC), 1% H2O2 + 4 mM PUT, 1% H2O2 + 4% SUC, 4 mM PUT + 4% SUC and 1% H2O2 + 4% SUC + 4 mM PUT in the research. Among these applications, combined applications of different root promoting applications were found to be more potent than alone applications. The results of current study pointed out that applications of 1% H2O2 + 4% SUC and 1% H2O2 + 4 mM PUT enhanced the adventitious root formation and other root characteristics in hardwood cuttings of difficult-to-root grapevine rootstock 140Ru. Therefore, combined applications of H2O2, SUC and PUT may be applied as root promoting chemicals for improving adventitious root formation in hardwood cuttings of difficult-to-root grapevine rootstocks. © 2020 International Society for Horticultural Science. All rights reserved.
Assessment of electrochemical attribute and monoterpene content of twelve aromatic grape cultivars (V. Vinifera L.) grown under the ecological conditions of northwestern Turkey
(Scibulcom Ltd., 2017) Kök, Demir
Electrochemical attributes of fruits are important for quality assessment in various fruit species and also grapes. Grape-derived glycosides, which are also partly prominent cultivar grape aroma, are considered to be the primary precursors for table and wine grape aroma. These quality characteristics of berries may depend on cultivar, ecological conditions and viticultural practices used in vineyard. In present study, results showed great quantitative differences in the berry chemical properties of grape cultivars. The levels of free and potentially monoterpenes in juice from cv. Muscat Ottonel were respectively the highest (3.443 and 9.968 mg/l), while cv. Merlot had the lowest amount of levels of free and potentially monoterpenes (0.793 and 1.965 mg/l). In terms of p-values, it was seen that of the cultivars cv. Merlot had the lowest p-value (108.73 ?W) and the highest value was obtained from cv. Muscat Ottonel (141.77 ?W). As a result, Muscat grape cultivars had intensive aroma characteristics in terms of monoterpene content, but cv. Merlot had the lowest p-value, meaning it has higher quality attribute in terms of other quality attributes.
Berry Growth and Biochemical Characteristics of cv. Trakya Ilkeren (V-vinifera L.) as Influenced by Various Doses of Pre-Harvest Hydrogen Peroxide and Phenylalanine Applications
(Springer, 2018) Kök, Demir
Uneven grape ripening, leading to decreases economic valued of grapes is one of the main problems faced by grape growers in early table grape growing. In recent years, there has been increasing concern about improving of fruit quality in fruit crops. Among the various quality improvement methods, different types of foliar compounds are used for this purpose and hydrogen peroxide (H2O2) and phenylalanine (Phe) can be given as examples to some of these chemicals. This research was carried out during the 2015 growing season by using early ripening table grape cv. Trakya Ilkeren. In the study, it was assessed that how different doses of hydrogen peroxide (0, 10, 20 and 40mM) and phenylalanine (0, 1, 2 and 4mM) affected physical and biochemical properties of cv. Trakya Ilkeren. In terms of physical properties, doses of hydrogen peroxide and phenylalanine had only significant effects on grape firmness and cluster length. The best results were obtained from 4mM Phe application (6.76N) in grape firmness and were obtained from applications of 10, 20 and 40mM H2O2 (23.66, 23.86 and 23.99cm) and applications of 1, 2, and 4mM Phe (23.95, 24.46 and 24.88cm) in cluster length. However, most of biochemical properties were considerably affected by doses of hydrogen peroxide and phenylalanine except for juice pH and p-value. It was recorded that the highest total phenolic compounds contents varied from 3571.28 (10mM H2O2) to 3871.22mg GAE kg(-1) fw (40mM H2O2) compared to 0mM application (2591.48mg GAE kg(-1) fw). In terms of total anthocyanin content, the highest mean was recorded for 4mM Phe application (330.56mg GAE kg(-1) fw) than 0mM application (168.79mg GAE kg(-1) fw). As aresult, 4mM Phe application particularly improved the most of biochemical properties in cv. Trakya Ilkeren.
Changes in Phenolic Compounds Profile and Anthocyanin Content of cv. Cabernet Sauvignon (V-vinifera L.) Induced by Different Doses of Foliar Oak Applications with Urea
(Springer, 2018) Kök, Demir
Phenolic compounds and anthocyanins had pivotal roles on wine grape quality. In order to enhance contents of these substances, several techniques have been applied to grapevines. In recent years, there has been an increasing concern about using of foliar oak applications for improving wine grape quality. In this study, it was used a low concentration (0.6%) of urea for increasing efficiency of different doses of oak applications. For this aim, it was benefited from different doses of foliar oak applications with or without urea, including: 0ppm oak (Oa), 1250ppm oak (Oa), 2500ppm (Oa), 5000ppm (Oa), 0ppm oak (Oa)+0.6% Urea (Ur), 1250ppm oak (Oa)+0.6% Urea (Ur), 2500ppm oak (Oa)+0.6% Urea (Ur), 5000ppm oak (Oa)+0.6% Urea (Ur). Although yield and wine grape quality characteristics were favorably affected by increasing doses of oak applications; urea added oak applications were especially found to be more effective for both characteristics. As a result, application of 5000ppm oak (Oa)+0.6% Urea (Ur) led to best results in terms of yield and wine grape characteristics of cv. Cabernet Sauvignon.
Changes in Yield and Quality Characteristics of Some Early Ripening Table Grape Cultivars (V-vinifera L.) in Response to Different Doses of Distinct Biostimulant Treatments
(Springer, 2018) Kök, Demir; Bal, Erdinç
Grape growers may occasionally face difficulties in grape skin coloration and low total soluble solids content in growing of early ripening table grape cultivars. In order to overcome these difficulties, it can be utilized from foliar biostimulants treatments. The purpose of this study, carried out 2015 growing season in Tekirda, Turkey, was to compare the effects of doses of two different biostimulants, enhancing table grape quality characteristics of cv. Tarsus Beyaz, cv. Trakya Ilkeren and cv. Yalova Incisi. For this aim, it was focused on three different doses for both biostimulants, including 0, 1750 and 3500ppm (respectively, Control, BStA-1 and BStA-2) for first biostimulant and 0, 3500 and 4500ppm (respectively, Control, BStB-1 and BStB-2) for second biostimulant. As aresult, present research demonstrated that BStB-2 and BStA-2 treatments especially enhanced most of table grape quality characteristics in cv. Tarsus Beyaz, cv. Trakya Ilkeren and cv. Yalova Incisi.
Changes on Bioactive Compounds and Electrochemical Characteristics of cv. Horoz Karası Table Grape (V. vinifera L.) Induced by Various Doses of Preharvest Applications of Benzoic Acid, Citric Acid and Oxalic Acid at Berry Setting and Verasion Periods
(Springer Verlag, 2019) Kök, Demir; Bal, Erdinç
Foliar applications, which have been used in agriculture for many years, are one of the useful strategies to apply nutrients and chemicals directly to leaves and fruits for improving quality properties in various fruit species. In present study, the effectiveness of preharvest applications with benzoic acid (BA), citric acid (CA) and oxalic acid (OA) at three doses (0, 1000 and 1500?ppm) at two periods of berry growth, including berry setting period (P1) and verasion period (P2) on bioactive compounds and electrochemical response of cv. Horoz Karası were investigated in 2015 growing season. Study findings indicated that rising application doses of phenolic acids, including Benzoic Acid (BA), Oxalic Acid (OA) and Citric Acid (CA) at verasion period (P2) had considerable effects on table grape quality properties of cv. Horoz Karası than same doses of phenolic acids applications at berry setting period (P1). The highest increases in contents of total phenolic compounds, total anthocyanin and electrochemical characteristic were respectively encouraged by applications of BAP2 1500?ppm, BAP2 1000?ppm, OAP2 1500?ppm, OAP2 1000?ppm, CAP2 1500?ppm, CAP2 1000?ppm. © 2019, Springer-Verlag GmbH Deutschland, ein Teil von Springer Nature.
Chemical and Non-Chemical Thinning Treatments Influence Berry Growth and Composition of Cv. Shiraz Wine Grape (V-vinifera L.)
(Springer, 2017) Kök, Demir; Bal, Erdinç
Yield management is important subject in modern grape growing and winter pruning and cluster thinning treatments were used for yield control. Standard cluster thinning is generally labor intensive and expensive method and grape growers try to new methods, which are alternative to cluster thinning for reducing berry set. The goal of the present research was to investigate the effects of chemical thinning treatments such as ethephon (ETH), gibberellic acid (GA(3)), naphthalene acetic acid (NAA) and non-chemical thinning treatments such as early leaf removal (ELR) and standard cluster thinning (SCT) on decreasing grape yield and enhancing berry composition of cv. Shiraz. In this study, percentages of berry set of cv. Shiraz were decreased by both chemical and non-chemical thinning treatments compared to Control. The results from these two different thinning methods shown certainly significant differences in berry composition of cv. Shiraz. Eventually, the best results in improved quality characteristics of cv. Shiraz were obtained from ELR treatment and treatments of ELR, ETH, GA(3,) NAA and SCT successively resulted in considerable enhancements in quality attributes of cv. Shiraz.
Compositional differences in phenolic compounds and anthocyanin contents of some table and wine grape (V. vinifera l.) varieties from turkey
(Scibulcom Ltd., 2017) Kök, Demir; Bal, Erdinç
In present study, total phenolic compounds content and total anthocyanin content in skins of coloured and white grapes, consisting of four table grape and four wine grape varieties grown in Turkey were evaluated. Amounts of these bioactive compounds were determined by different spectrophotometric methods. Study results showed that total phenolic compounds content and total anthocyanin content varied with grape varieties and it was observed that wine grape varieties had higher contents of phenolic compounds and anthocyanin compared to table grape varieties. In research, total soluble solids contents were between 16.62 and 23.27% in Horoz Karasi and Merlot grape variety. The phenolic compounds contents ranged from 192.52 to 3550.37 mg GAE/ kg fresh weight (fw) for Tekirdag Misketi and Merlot variety. However, the lowest mean of total anthocyanin content in coloured grape varieties was recorded for Horoz Karasi variety (627.18 mg GAE/kg fw), when the highest total anthocyanin content was 1509.38 mg GAE/kg fw for Merlot variety. It was determined that table and wine grape varieties from present study contained high amount phenolic compounds and anthocyanin, which were important bioactive compounds for human health. © 2017, Scibulcom Ltd. All rights reserved.
Derim sonrası UV-C ve etanol uygulamalarının Red Globe üzüm çeşidinin kalitesi ve muhafaza süresi üzerine etkileri
(2018) Bal, Erdinç; Torçuk, Ali İzzet; Kök, Demir
Bu çalışma, ‘Red Globe’ üzüm çeşidinin soğukta muhafazası üzerine farklı dozlardaUV-C ışını uygulamaları ve etanol buhar pedlerinin tekli veya kombinasyonlarının,ticari olarak kullanılan kükürt dioksit (SO2) jeneratörü ile karşılaştırılması amacıylayürütülmüştür. Çalışmada, uygulamalar sonrasında salkımlar MAP torbalardapaketlenerek 0-1°C ve %90-95 oransal nemli soğuk hava deposunda 3 ay süre ilemuhafaza altına alınmıştır. Depolama sırasında aylık olarak, suda çözünebilir kurumadde içeriği, titre edilebilir asit miktarı, toplam fenolik madde miktarı, toplamantosiyanin miktarı ve antioksidan kapasite, salkım iskeleti rengi, çürüklük gelişimiile dış görünüş gibi fiziksel ve kimyasal parametrelerde meydana gelen değişmelerincelenmiştir. Elde edilen sonuçlara göre, depolama süresi arttıkça üzüm kalitesindekayıplar meydana gelmiştir. Uygulamalara bağlı olarak biyokimyasal bileşiklerdederim değerine göre muhafaza sonunda artış veya azalış şeklinde dalgalanmalargörülmüştür. Kontrol uygulamasında depolama süresi sonunda görülen çürüklükgelişimleri önemli düzeyde artmış ve pazarlanamaz seviyeye ulaşmıştır. Bununyanında, 90 günlük depolama periyodu sonunda üzüm kalite özelliklerininkorunumu açısından en başarılı uygulama SO2 uygulaması olmuş ve bunu UV-C 1 +Antimold 60 uygulaması izlemiştir.
Determination of phytochemical properties in genetic materials collected from grapevines (Vitis spp.) found in natural flora of ganos mountains
(Namik Kemal University - Agricultural Faculty, 2018) Kök, Demir; Bahar, Elman; Korkutal, İlknur; Bal, Erdinç; Alço, Tezcan; Candar, Serkan; Yaşasin, A.S.
Natural flora of Ganos Mountains in the Thrace region has an old and well-established viticulture and is a spreading area of natural hybrids. This research was performed to determine properties of grape and cluster and phytochemical properties of berries of 103 grapevine genetic materials (Vitis spp.) adapted to natural flora of Ganos Mountains in Thrace region of Turkey during the 2014 growing season. But physical measurement and chemical analysis were performed only in grapes from 31 grapevines that carried clusters during their maturity periods. Results revealed that 29,04% of grapevines examined had table grape properties (Vv43, Vv52, Vv54, Vv56, Vv57, Vv61, Vv62, Vv83, Vv100) and 70,96% of grapevines examined had wine grape properties (Vv6, Vv18, Vv23, Vv24, Vv27, Vv44, Vv45, Vv51, Vv55, Vv59, Vv63, Vv65, Vv66, Vv74, Vv75, Vv84, Vv87, Vv88, Vv91, Vv92, Vv98, Vv101). In terms of phytochemical properties of grapes from examined grapevines, while the highest total phenolic compounds content and total anthocyanin content in grapes were respectively 5609,44 mg/kg for Vv88 number of grapevine and 2602,56 mg/kg for Vv74 number of grapevine; the highest total tannin content in grapes was recorded for Vv18 number of grapevine as 5557,10 mg/kg. Since the natural flora of Ganos Mountains in Thrace region is a place where the viticulture has been conducted intensely for many years; identification of phytochemical properties in grapes of genetic materials obtained from this region is of importance in terms of future studies. © 2018 Namik Kemal University - Agricultural Faculty. All rights reserved.
Different Treatment Timings of Basal Leaf Removal and Reflective Mulch Affect Biochemical and Electrochemical Characteristics of cv. Cabernet Sauvignon Wine Grapes (V. vinifera L.)
(Springer Science and Business Media Deutschland GmbH, 2021) Kök, Demir
Bioactive compounds and electrochemical characteristics are remarkable quality components for wine grapes and quality characteristics of grape are influenced by various factors such as grape cultivar, environmental and viticultural practices in a vineyard. There has recently been growing interest in improvement of wine grape quality characteristics by means of basal leaf removal (BLR) and reflective mulch (RM) practices. In current study, treatments of BLR, RM and BLR?+ RM were performed at two different phenological stages of grapevine, including pea size period (PSP) and vérasion period (VP). At the end of research, study results revealed that different treatment timings of basal leaf removal and reflective mulch had crucial roles on increasing of wine grape quality. Consequently, BLR-PSP?+ RM-PSP treatment especially led to significant enhancements in biochemical characteristics of cv. Cabernet Sauvignon like phenolic compounds, anthocyanins and electrochemical characteristics. © 2021, Springer-Verlag GmbH Deutschland, ein Teil von Springer Nature.
Effects of different vineyard altitudes and grapevine directions on some leaf characteristics of CV. Gamay vitis vinifera L
(National Centre for Agrarian Sciences, 2015) Kök, Demir; Bahar, Elman
This study was carried out in Ucmakdere Village of Sarkoy County in Tekirdag province of Turkey using cv. Gamay in the course of 2009 growing season. In this research, three levels of vineyard altitude (i.e., low, mid and high) and four different directions of grapevine (i.e., north, south, east and west) were assessed in terms of their effects on some leaf characteristics of cv. Gamay. Based on responses of cv. Gamay to different vineyard altitudes and grapevine directions, strong altitudinal relationships were found out in examined characteristics, including leaf area, stomatal density, stomata length and stomata width. The research results revealed that leaf area and stomatal characteristics were variously affected by vineyard altitudes and also collecting directions of leaves from grapevines. It was observed in research results that leaf stomatal density and stomata length increased with rising vineyard altitude, but leaf area and stomata width reduced with elevating vineyard altitude, regardless of grapevine directions. © 2015, National Centre for Agrarian Sciences. All Rights reserved.
Effects of Foliar Seaweed and Humic Acid Treatments on Monoterpene Profile and Biochemical Properties of cv. Riesling Berry (V. vinifera L.) Throughout the Maturation Period
(Namık Kemal Üniversitesi, Ziraat Fakültesi, 2016) Kök, Demir; Bal, Erdinç
This study has been conducted to find out the effects of foliar treatments of seaweed (SW) and humic acid (HA) on cv. Riesling wine grape throughout ripening period from veraison period to harvest period at 15 days of interval. Such as veraison period, 15 days after veraison period and 30 days after veraison period aimed to examine the biochemical variations in berry. In this research, the doses of 0, 1000, 2000 ppm of SW and HA treatments have been selected, and applied to grapevines three times at different phenological stages of grapevine. Among the berry sampling, in terms of measurement and analysis, the best quality characteristics were respectively obtained from the period of 30 days after veraison, 15 days after veraison and veraison, and the results showed that the foliar sprays of SW and HA could modify the biochemical characteristics of berries in cv. Riesling. In terms of free volatile terpenes (FVTs) and potentially volatile terpenes (PVTs) of berries, which are also very important for aromatic grape cultivars, 1000 ppm doses of both of SW and HA treatments respectively displayed the highest contents in FVTs (0.880 and 0.804 mg L-1) and PVTs (2.153 and 2.084 mg L-1). Consequently, 1000 ppm doses of SW and HA foliar treatments provided the best improvements in most quality characteristics of berry when they were harvested at 30 days after veraison period.
Effects of Uv-C Treatment on Kiwifruit Quality During the Storage Period
(Univ Zagreb, Fac Agriculture, 2009) Bal, Erdinç; Kök, Demir
This experiment was conducted at Namik Kemal University, Agriculture Faculty and Department of Horticulture in Turkey and Actinidia deliciosa cv. Hayward was used for this aim. In this study, Kiwifruits were irradiated with different doses of UV-C treatment (50, 75 and 100 cm distance for 5, 10 and 15 min). Later, they were put in polyethylene container with packed polyethylene bags and stored under the conditions of cool air store (at 0-10 degrees C, 90-95 % relative humidity) for 200 days. During the experiment, quality attributes of kiwifruit was assessed at 40 days intervals and UV-C treatment from 75 cm distance for 10 min was especially found to be more effective than the others.
Electrochemical Properties and Biochemical Composition of Cv. Shiraz Wine Grape (V-vinifera L.) Depending on Various Dose and Application Time of Foliar Microbial Fertilizer Treatments
(Springer, 2017) Kök, Demir; Bal, Erdinç
Utilization from bio fertilization is well known a considerable tool to improve the yield and fruit quality of various crop fruits through the increasing emphasis on maintain of soil health, minimize environmental pollution and decrease the use of chemical fertilization. In this study, in order to improve wine grape quality features of cv. Shiraz, four different doses of foliar microbial fertilizer, including 0, 1000, 2000 and 3000 ppm were applied at two different terms as Term I (mostly; pre-bloom applications) and Term II (mostly; post-bloom applications). However, there were no influences of application terms of foliar microbial fertilizer treatments; treatment doses had considerable effects on yield and quality parameters. The lowest p-values, meaning the highest berry quality, from doses of foliar microbial fertilizer were obtained from 2000 ppm (105.08 mu W), 1000 ppm (110.40 mu W), 3000 ppm (112.97 mu W) and 0 ppm (119.58 mu W). Comparing the applications of foliar microbial fertilizer, it was observed that doses of 2000 ppm (3155.56 mg/kg), 1000 ppm (3000.92 mg/kg) and 3000 ppm (2530.19 mg/kg) exhibited higher total phenolic compounds content when compared with 0 ppm treatment (2206.97 mg/kg). Berries from grapevines applied with the doses of 2000, 1000 and 3000 ppm foliar microbial fertilizer respectively shown higher total anthocyanin content such as 1230.19, 1160.85 and 865.86 mg/kg compared to 0 ppm (637.37 mg/kg). As a result, research the findings indicated that 2000 and 1000 ppm doses of foliar microbial fertilizer were obviously effective on wine grape quality features of cv. Shiraz in terms of electrochemical property, total phenolic compounds content and total anthocyanin content.
Enhancing Skin Color and Phenolic Compounds of Cv. Red Globe Table Grape (V-Vinifera L.) Utilizing of Different Preharvest Treatments
(Springer, 2018) Kök, Demir; Bal, Erdinç
Foliar sprayings of grapevines with different plant growth regulators or chemicals were evaluated for determining grape skin color and phenolic compounds content and enhancing table grape quality characteristics of cv. Red Globe in this study. Grape skin color is one of the most important quality factors for table grapes. Sometimes, it can be viewed difficulties in skin coloration of some red table grape cultivars grown in various grape growing regions of the world and poor skin coloration of red table grapes is a frequent trouble that reduces production efficiency. Despite the fact that it is utilized from some canopy management practices; plant growth regulators, chemicals with plant hormones and hormone-like compounds as active ingredients can be recently used for improving anthocyanin accumulation in growing of some table grape cultivars. In current study, nine different preharvest treatments were used for improving quality parameters of cv. Red Globe, including 1aEuroControl (C), 2-300 mg/L Abscisic acid (ABA), 3-300 mg/L Ethephon (Eth), 4-30% Ethanol (EtOH), 5-300 mg/L ABA + 300 mg/L Eth, 6-300 mg/L ABA + 30% EtOH, 7-300 mg/L Eth + 30% EtOH, 8-300 mg/L ABA + 300 mg/L Eth + 30% EtOH and 9aEuroCluster tip cutting (CTC). Although the best results from total phenolic compounds content and total anthocyanin content of cv. Red Globe were obtained in CTC treatment in all preharvest treatments, Eth+ETOH treatment especially gave rise to the best results among the preharvest chemical treatments.
FARKLI DOZ VE SÜRELERDE UYGULANAN Trichoderma harzianum'un RAMSEY ANACI ÇELİKLERİNİN KÖKLENMESİ ÜZERİNE ETKİLERİ
(2018) Kök, Demir
Trichoderma orjinli bileşikler antifungal özelliğe sahip olup, bitkilerin toprak üstü aksamında veköklerinde büyümeyi sağlamaktadır. Bu çalışma, 2013 yılında Namık Kemal Üniversitesi, ZiraatFakültesi, Bahçe Bitkileri Bölümüne ait deneme alanında yürütülmüştür. Denemede farklı doz (0, 0.5, 1,2 ve 4 g/L) ve sürelerde (1, 6 ve 12 saat) uygulanan Trichoderma harzianum’un Ramsey anacına aitçeliklerde sürgün ve kök özellikleri üzerine etkileri incelenmiştir. Araştırma sonucunda artan doz vesürelerde Trichoderma harzianum uygulamalarının çeliklerin sürgün ve kök özelliklerini olumlu yöndeetkilediği belirlenmiştir. Sonuç olarak, Trichoderma harzianum’un 4 g/L uygulama dozunun 6 ve 12 saatsüreler ile uygulanması Ramsey anacı çeliklerinin köklendirilmesinde en iyi sonucu vermiştir.
Farklı Dozlarda Putresin ve İndol-3-Bütirik Asidin Birlikte Uygulamalarının Cabernet Franc/5bb Aşı Kombinasyonunda Kallus Gelişimi Üzerine Etkileri
(2018) Kök, Demir
Bu araştırma, 2013 yılında Namık Kemal Üniversitesi Ziraat Fakültesi Bahçe Bitkileri Bölümüne ait olanaşı ünitesinde gerçekleştirilmiştir. Çalışmada, putresin (PUT; 0, 2.5, 5 ve 10 mM) ve indol–3–asetikasidin (IBA; 0 ppm (–) ve 2000 ppm (+)) birlikte uygulanan farklı dozlarının Cabernet Franc/5BB aşıkombinasyonunda kallus oluşumu üzerine etkileri incelenmiştir. Deneme sonucunda, Cabernet Franc/5BBaşı kombinasyonunda putresinin artan dozları olumlu sonuçlar vermekle birlikte, en iyi sonuçlar indol–3–asetik asit ilaveli uygulamalardan elde edilmiştir. Uygulama dozları arasında özellikle PUT 10 mM+IBA(+) uygulamasının Cabernet Franc/5BB aşı kombinasyonunda incelenen parametreler açısından en iyisonuçları verdiği görülmüştür.
Farklı Salisilik Asit Dozlarının Asma Anaçlarının Tuzluluğa Dayanımı Üzerine Etkileri
(Namık Kemal Üniversitesi, Ziraat Fakültesi, 2012) Kök, Demir
Salisilik asit bitkilerin büyüme ve gelişmelerini etkileyen birçok metabolik ve fizyolojik olay üzerinde etkili olan içsel bir bitki büyüme düzenleyicidir. Bu çalışmada, değişik dozlarda hazırlanan salisilik asidin (0, 1, 5, 10 mM) tuz stresi altındaki (8 dS m-1~5120 ppm) 5 BB, SO4 ve 140 Ru asma anacı çeliklerinin büyüme ve bazı fizyolojik özellikleri üzerine etkileri belirlenmiştir. Sonuç olarak, tuz stresi altındaki asma anacı çeliklerinde salisilik asidin farklı dozlarının birçok yönden etkili olduğu ve özellikle çeliklerin sürgün ve yapraklarında önemli zararlarmeydana getiren 2. ve 3. derece tuzluluk zararlarının kontrole göre (0 mM) salisilik asit uygulanmış çeliklerde daha düşük oranlarda ortaya çıktığı tespit edilmiştir.

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